Engine



FIG. 1 is a front perspective view of an engine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view thereof.

The broken lines shown in the figures are for illustrative environmental purposes only and form no part of the claimed design. 

The ornamental design for an engine, as shown and described. 